SMTP2HTTP (email-to-web)

smtp2http is a simple smtp server that resends the incoming email to the configured web endpoint (webhook) as a basic http post request.

Dev

• go mod vendor
• go build

Dev with Docker

Locally :

• go mod vendor
• docker build -f Dockerfile.dev -t smtp2http-dev .
• docker run -p 25:25 smtp2http-dev --timeout.read=50 --timeout.write=50 --webhook=http://some.hook/api

Or build it as it comes from the repo :

• docker build -t smtp2http .
• docker run -p 25:25 smtp2http --timeout.read=50 --timeout.write=50 --webhook=http://some.hook/api

The timeout options are of course optional but make it easier to test in local with telnet localhost 25
Here is a telnet example payload :

HELO zeus
# smtp answer
MAIL FROM:<email@from.com>
# smtp answer
RCPT TO:<youremail@example.com>
# smtp answer
DATA
your mail content
.

Docker (production)

Docker images arn’t available online for now
See “Dev with Docker” above

• docker run -p 25:25 smtp2http --webhook=http://some.hook/api

Native usage

smtp2http --listen=:25 --webhook=http://localhost:8080/api/smtp-hook
smtp2http --help

Contribution

Original repo from @alash3al
Thanks to @aranajuan